libltdl-dev binary package in Ubuntu Bionic amd64

 This package contains the header files and static libraries for the
 libltdl package.
 .
 A small library that aims at hiding the various difficulties of
 dlopening libraries from programmers. It is a system independent
 dlopen wrapper for GNU libtool.
 .
 It supports the following dlopen interfaces:
   * dlopen (Solaris, Linux and various BSD flavors)
   * shl_load (HP-UX)
   * LoadLibrary (Win16 and Win32)
   * load_add_on (BeOS)
   * GNU DLD (emulates dynamic linking for static libraries)
   * libtool's dlpreopen

Source package